Half to james e



(No Model.)

T. MIDGLEY.

WIRE BELTING.

Patented Feb. 26, 1889.

UNTTED STATES PATENT OFFICE.

THOMAS MIDGLEY, OF BEAVER FALLS, PENNSYLVANIA, ASSIGNOR OF ONE- HALF TO JAMES E. EMERSON, OF SAME PLACE.

WIRE BELTING.

SPECIFICATION forming part of Letters I'atent No. 398,427, dated February 26, 1889.

Application filed October 20, 1838. Serial No. 283,626. (No model.)

To aZZ 2072 0710 it may concern: i The stretching of the helices may be ef- Be it known that I, THOMAS MIDGLEY,aeitifected by engaging the front end of the sheet zen of the United States, residing at Beaver i in a suitable clamp and drawing the sheet by Falls, in the county of Beaver and State of any suitable means, while the rear end of the 5 Pennsylvania, have invented. certain new and sheet may be held upon a reel or made to pass useful Improvements in \Vire Belting; and I between suitable tension-rolls. do hereby declare the following to be a full, In drawing the sheet through the furnace clear, and exact description of the invention, the projecting ends a I) of the sections A are such as will enable others skilled in the art to drawn back into their original position, and I0 which it appertains to make and use the same. when the helices have been stretched and My invention relates to wire belting, and flattened the welded ends form long links f, has for its object an improvement in the 0011- as shown in Fig. 3. The sheet is then temstruction of the edges of a belt. pered, when it is ready for use as belting.

The invention willbe hereinafter described, In stretching and flattening the helices the T5 and particularly pointed out in the claims. links are all made to seat evenly and regu- In the accompanying drawings, which form larly throughout the entire length of the sheet,

part of this specification, Figure 1 is a plan and the stretch of the wire taken out of the view of a section of wire belting, showing the belting before it is put into use. Further sect-ions of coiled wire with their ends welded more, in stretching the helices the width of '20 before and after having been stretched. Fig. the sheet is reduced about one third, while 2 is a similar view of a section of the belting the length is increased to about double that after having been stretched and partly covof the original sheet. ered with rubber; and Fig. 3 is a section of The Wire belting thus constructed may be the belting, showing one of its edges. covered with canvas and rubber, or with rub- 2 5 Reference being had to the drawings and ber or its equivalentsuch as caoutchoue' the letters thereon, A represents sections of alone, as shown at B in Fig. 2, and passed coiled wire, which are intertwined by securbetween rolls heated to about 170 to 172 ing one section into another until a sheet of Fahrenheit to cause the rubber to soften and any desiredlength andwidt-hhas been formed. embed itself in the interstices between the 0 After the sheet has been formed the ends ab links and adhere thereto.

of the first and second sections A are drawn The method of stretching the sheet is claimed out slightly, as shown in Fig. l, and made to in another application filed herewith, Serial abut. All of the ends of the sections A through- No. 288,630. out the entire length of the sheet are drawn Having thus fully described my invention,

35 out and made to abut in the same manner. what I claim is The ends are then welded at the pointe by an 1. \Vire belting composed of intertwined electric current or by other suitable means, transverse sections of coiled wire having the 0 and the sheet made to present a continuous helices elongated, and the ends of the wires strand of wire and the edges of the sheet an forming adjacent sections welded together to 40 unbroken surface. By this construction the form an edge for the belt, substantially as deragged ends of the wire, heretofore. a source scribed. of great annoyance and detriment to the prao- 2. Wire belting composed of intertwined 5 tical use of wire belting, are entirely removed transverse sections of -coiled wire having the and a smooth and regular working-edge for helices elongated, and the ends of the Wires 5 the belt produced without the encircling of forming adjacent sections welded together,

the edge with a separate longitudinal coil. and a covering of rubber or equivalent mate- After the ends a b have all been welded, the rial, substantially as described. sheet is passed through a furnace heated to In testimony whereof I affix my signature in a proper degree (about a cherryred heat) presence of two witnesses.

50 and the helices cl stretched into elongated THOMAS MIDGLEY.

and flattened links 6 by applying longitudi- Vl itnessesz nal tension to the sheet while passing through J. F. MERRIMAN,

the furnace. JOHN REEVES. 

